The Slashdot tagline used to be: "News for Nerds, Stuff that Matters". I no longer see this on the front page, and it's not even in the page title.
A conversation about what Slashdot is, what it used to be, and what it's becoming, notwithstanding, I would expect the 'Nerd' option to be the highest, as the site is (or at the very least, used to be) 'news for nerds'.

I can ramble for hours about technology of various sorts, I sometimes spend unhealthy amounts of time programming or playing computer games, I play D&D, and I have plenty of absent-minded professor moments. However, I also have a social life, play disc golf, and spend good portions of my summers backpacking. So, anything from neither to both, depending on the situation? Answered: Stop trying to classify me!

A geek and a nerd are mostly the same. I've always thought nerds like learning for the sake of learning, and geeks obsess about certain topics and learn about those. Nerds are more introverted (like me) and geeks are more extroverted. Basically geeks are nerds that want to be socially accepted while nerds -- who still like positive attention -- don't expect social acceptance. Geeks have more friends, nerds have less. Actually geeks may have more acquaintances than close friends, while nerds have more close friends than acquaintances.
I consider myself a nerd, if anyone wants to know "who in the hell typed that?" Okay, thank you for your time, please return to your regularly scheduled program already in progress.

I've always seen geeks as individuals that are "supersaturated" with knowledge of a particular discipline. There can be math geeks, computer geeks, star trek geeks, movie geeks, car geeks, sports geeks... But just because one is a geek does not in-and-of-itself mean one is a nerd.

Nerd is a title granted to individuals with two characteristics: high intelligence combined with a complete absence of social prowess. It's the latter trait that often distinguishes the geeks and the nerds. I've seen plenty of geeks in my life that are not nerds; as intelligent individuals with the ability to socialize, they are quite pleasant conversationalists. I have seen some nerds who aren't geeks; those individuals possess great intelligence not isolated to a particular discipline, but are very difficult to communicate with.